<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <h1>hello thhh post</h1>
  <form action="/login" method="post">
    账号：<input type="text" name='username'><br>
    密码：<input type="text" name="password"><br>
    <button>登录</button>
  </form>
</body>

</html>